J J Knapik

Summary

Affiliation: Walter Reed Army Medical Center
Country: USA

Publications

  1. ncbi Risk factors for training-related injuries among men and women in basic combat training
    J J Knapik
    Directorate of Epidemiology and Disease Surveillance, U S Army Center for Health Promotion and Preventive Medicine, Aberdeen Proving Ground, MD 21010, USA
    Med Sci Sports Exerc 33:946-54. 2001
  2. ncbi The basis for prescribed ability group run speeds and distances in U.S. Army basic combat training
    Joseph J Knapik
    U S Army Center for Health Promotion and Preventive Medicine, Aberdeen Proving Ground, MD 21010, USA
    Mil Med 171:669-77. 2006
  3. ncbi Injuries and illnesses among armor brigade soldiers during operational training
    Salima Darakjy
    U S Army Center for Health Promotion and Preventive Medicine, Aberdeen Proving Ground, MD 21010, USA
    Mil Med 171:1051-6. 2006
  4. ncbi Injuries and injury risk factors among members of the United States Army Band
    Joseph J Knapik
    US Army Center for Health Promotion and Preventive Medicine, Aberdeen Proving Ground, Maryland 21010, USA
    Am J Ind Med 50:951-61. 2007
  5. ncbi Parachute ankle brace and extrinsic injury risk factors during parachuting
    Joseph J Knapik
    U S Army Center for Health Promotion and Preventive Medicine, 1570 Stark Road, Aberdeen Proving Ground, MD 21010, USA
    Aviat Space Environ Med 79:408-15. 2008
  6. doi A systematic review of the effects of physical training on load carriage performance
    Joseph J Knapik
    U S Army Institute of Public Health, Epidemiology and Disease Surveillance Portfolio, Aberdeen Proving Ground, Maryland, USA
    J Strength Cond Res 26:585-97. 2012
  7. ncbi Temporal changes in the physical fitness of US Army recruits
    Joseph J Knapik
    US Army Center for Health Promotion and Preventive Medicine, Aberdeen Proving Ground, Maryland 21010 5403, USA
    Sports Med 36:613-34. 2006
  8. ncbi Energy cost during locomotion across snow: a comparison of four types of snowshoes with snowshoe design considerations
    Joseph J Knapik
    Epidemiology and Disease Surveillance, US Army Center for Health Promotion and Preventive Medicine, Aberdeen Proving Ground, MD 21010, USA
    Work 18:171-7. 2002
  9. ncbi Injury and fitness outcomes during implementation of physical readiness training
    J J Knapik
    US Army Center for Health Promotion and Preventive Medicine Aberdeen Proving Ground, MD 21010, USA
    Int J Sports Med 24:372-81. 2003
  10. pmc Influence of an injury reduction program on injury and fitness outcomes among soldiers
    J J Knapik
    Epidemiology and Disease Surveillance, United States Army Center for Health Promotion and Preventive Medicine, Aberdeen Proving Ground, Maryland 21010, USA
    Inj Prev 10:37-42. 2004

Detail Information

Publications36

  1. ncbi Risk factors for training-related injuries among men and women in basic combat training
    J J Knapik
    Directorate of Epidemiology and Disease Surveillance, U S Army Center for Health Promotion and Preventive Medicine, Aberdeen Proving Ground, MD 21010, USA
    Med Sci Sports Exerc 33:946-54. 2001
    ..This study examined associations between injuries, direct (physiological) measures of physical fitness, and lifestyle characteristics...
  2. ncbi The basis for prescribed ability group run speeds and distances in U.S. Army basic combat training
    Joseph J Knapik
    U S Army Center for Health Promotion and Preventive Medicine, Aberdeen Proving Ground, MD 21010, USA
    Mil Med 171:669-77. 2006
    ..Using these recommended speeds and distances should allow trainees to improve their aerobic fitness, pass the Army Physical Fitness Test, and minimize injuries that result in lost training time and, ultimately, lower fitness levels...
  3. ncbi Injuries and illnesses among armor brigade soldiers during operational training
    Salima Darakjy
    U S Army Center for Health Promotion and Preventive Medicine, Aberdeen Proving Ground, MD 21010, USA
    Mil Med 171:1051-6. 2006
    ..Musculoskeletal injuries, environmental conditions, and dermatological conditions accounted for most visits...
  4. ncbi Injuries and injury risk factors among members of the United States Army Band
    Joseph J Knapik
    US Army Center for Health Promotion and Preventive Medicine, Aberdeen Proving Ground, Maryland 21010, USA
    Am J Ind Med 50:951-61. 2007
    ..This project documented injuries in the professional musical performers of the US Army Band and used a multivariate approach to determine injury risk factors...
  5. ncbi Parachute ankle brace and extrinsic injury risk factors during parachuting
    Joseph J Knapik
    U S Army Center for Health Promotion and Preventive Medicine, 1570 Stark Road, Aberdeen Proving Ground, MD 21010, USA
    Aviat Space Environ Med 79:408-15. 2008
    ..This study examined the injury prevention effectiveness of the parachute ankle brace (PAB) while controlling for known extrinsic risk factors...
  6. doi A systematic review of the effects of physical training on load carriage performance
    Joseph J Knapik
    U S Army Institute of Public Health, Epidemiology and Disease Surveillance Portfolio, Aberdeen Proving Ground, Maryland, USA
    J Strength Cond Res 26:585-97. 2012
    ..This review indicates that combinations of specific modes of physical training can substantially improve load carriage performance...
  7. ncbi Temporal changes in the physical fitness of US Army recruits
    Joseph J Knapik
    US Army Center for Health Promotion and Preventive Medicine, Aberdeen Proving Ground, Maryland 21010 5403, USA
    Sports Med 36:613-34. 2006
    ..This article indicates that temporal trends in recruit fitness differ depending on the fitness component measured. The very limited comparable data on civilian populations showed trends similar to the recruit data...
  8. ncbi Energy cost during locomotion across snow: a comparison of four types of snowshoes with snowshoe design considerations
    Joseph J Knapik
    Epidemiology and Disease Surveillance, US Army Center for Health Promotion and Preventive Medicine, Aberdeen Proving Ground, MD 21010, USA
    Work 18:171-7. 2002
    ..Further research will be necessary to determine the importance of these factors because of the limited number of subjects and the single snow condition examined here...
  9. ncbi Injury and fitness outcomes during implementation of physical readiness training
    J J Knapik
    US Army Center for Health Promotion and Preventive Medicine Aberdeen Proving Ground, MD 21010, USA
    Int J Sports Med 24:372-81. 2003
    ..6 %, p < 0.01) but not the men (1.6 % vs. 2.8 %, p = 0.18); the gender-combined EG had a higher pass rate (1.6 % vs. 3.7 %, p < 0.01). Overall, the PRT program reduced overuse injuries and allowed a higher success rate on the APFT...
  10. pmc Influence of an injury reduction program on injury and fitness outcomes among soldiers
    J J Knapik
    Epidemiology and Disease Surveillance, United States Army Center for Health Promotion and Preventive Medicine, Aberdeen Proving Ground, Maryland 21010, USA
    Inj Prev 10:37-42. 2004
    ..This study evaluated the influence of a multiple injury control intervention on injury and physical fitness outcomes among soldiers attending United States Army Ordnance School Advanced Individual Training...
  11. ncbi Mouthguards in sport activities : history, physical properties and injury prevention effectiveness
    Joseph J Knapik
    US Army Center for Health Promotion and Preventive Medicine, Aberdeen Proving Ground, Maryland 21010 5403, USA
    Sports Med 37:117-44. 2007
    ..Mouthguards should continue to be used in sport activities where there is significant risk of orofacial injury...
  12. ncbi Ambulatory physical activity during United States Army basic combat training
    J J Knapik
    U S Army Center for Health Promotion and Preventive Medicine, Aberdeen Proving Ground, MD 21010, USA
    Int J Sports Med 28:106-15. 2007
    ..2 +/- 9.7 kilometers/day. Differences among the 10 companies ranged from 14 720 +/- 6649 steps/day to 18 729 +/- 6328 steps/day. This survey provided the first examination of locomotor physical activity during an entire BCT cycle...
  13. ncbi Injury risk factors in parachuting and acceptability of the parachute ankle brace
    Joseph J Knapik
    Directorate of Epidemiology and Disease Surveillance, US Army Center for Health Promotion and Preventive Medicine, Aberdeen Proving Ground, MD 21010, USA
    Aviat Space Environ Med 79:689-94. 2008
    ..This investigation examined risk factors for injuries during military parachute training and solicited attitudes and opinions regarding a parachute ankle brace (PAB) that has been shown to protect against ankle injuries...
  14. ncbi Seasonal variations in injury rates during US Army Basic Combat Training
    Joseph J Knapik
    US Army Center for Health Promotion and Preventive Medicine, Aberdeen Proving Ground, MD 21010, USA
    Ann Occup Hyg 46:15-23. 2002
    ..This study examined seasonal differences in injury incidence during US Army Basic Combat Training, where physical activity was similar at all times of the year...
  15. doi Systematic review of the parachute ankle brace: injury risk reduction and cost effectiveness
    Joseph J Knapik
    U S Army Center for Health Promotion and Preventive Medicine, Aberdeen Proving Ground, Maryland 21010, USA
    Am J Prev Med 38:S182-8. 2010
    ..This investigation systematically reviewed studies examining the influence of the parachute ankle brace (PAB) on injuries during military parachuting and performed a cost-effectiveness analysis...
  16. ncbi Military parachuting injuries, associated events, and injury risk factors
    Joseph J Knapik
    U S Army Public Health Command Provisional, Aberdeen Proving Ground, MD 21010, USA
    Aviat Space Environ Med 82:797-804. 2011
    ..The purpose of this investigation was to examine injury incidence, events associated with injury, and injury risk factors during parachuting in an Army airborne infantry unit...
  17. ncbi The fitness training unit in U.S. Army basic combat training: physical fitness, training outcomes, and injuries
    J J Knapik
    Directorate of Epidemiology and Disease Surveillance, U.S. Army Center for Health Promotion and Preventive Medicine, Aberdeen Proving Ground, MD, USA
    Mil Med 166:356-61. 2001
    ..2 vs. 0.7 people injured/100 person-days; p < 0.01). Efforts should be directed toward providing a sufficient training stimulus to improve the aerobic fitness level of men (as well as women) in the FTU...
  18. doi Injuries before and after deployments to Afghanistan and Iraq
    J J Knapik
    US Army Institute of Public Health, Aberdeen Proving Ground, MD 21010, USA
    Public Health 126:498-506. 2012
    ..To examine outpatient injuries before and after deployments of elements of the 10th Mountain Division to Afghanistan (n = 505 men) and the 1st Cavalry Division to Iraq (n = 3242 men)...
  19. doi Risk factors associated with self-reported training-related injury before arrival at the US army ordnance school
    T L Grier
    US Army Center for Health Promotion and Preventive Medicine, Directorate of Epidemiology and Disease Surveillance, Aberdeen Proving Ground, MD 21010, USA
    Public Health 124:417-23. 2010
    ..This study examined risk factors for self-reported injury incurred before arrival at Ordnance School for advanced individual training (AIT)...
  20. ncbi Discharges during U.S. Army basic training: injury rates and risk factors
    J J Knapik
    U.S. Army Center for Health Promotion and Preventive Medicine, Aberdeen Proving Ground, MD, USA
    Mil Med 166:641-7. 2001
    ..Women with more body mass or a higher body mass index also had a marginally higher risk of discharge...
  21. ncbi The physical training and rehabilitation program: duration of rehabilitation and final outcome of injuries in basic combat training
    K G Hauret
    U.S. Army Center for Health Promotion and Preventive Medicine, Aberdeen Proving Ground, MD, USA
    Mil Med 166:820-6. 2001
    ..Rehabilitation challenges and significant motivational issues presumably contributed to the 52% return to duty incidence for PTRP soldiers...
  22. ncbi Validity of an anthropometric estimate of thigh muscle cross-sectional area
    J J Knapik
    Occupational Medicine Division, U S Army Research Institute of Environmental Medicine, Natick, MA, USA
    Med Sci Sports Exerc 28:1523-30. 1996
    ..between MRI and anthropometric estimates of AM, zero-intercept regression was used to produce the following final equation, applicable for use in populations studies of young, healthy, active men and women: [equation: see text]..
  23. ncbi The prevalence of exercise-induced bronchospasm among US Army recruits and its effects on physical performance
    L A Sonna
    US Army Research Institute of Environmental Medicine, Natick, MA 01760, USA
    Chest 119:1676-84. 2001
    ..To measure the prevalence of exercise-induced bronchospasm (EIB) and to determine its effect on the physical performance response to training in otherwise healthy young adults...
  24. ncbi Angiotensin-converting enzyme genotype and physical performance during US Army basic training
    L A Sonna
    Thermal and Mountain Medicine Division, US Army Research Institute of Environmental Medicine, Natick, Massachusetts 01760, USA
    J Appl Physiol (1985) 91:1355-63. 2001
    ..We conclude that ACE genotype does not have a strong effect on aerobic power or muscular endurance in healthy, young American adults drawn from an ethnically and geographically diverse population...
  25. ncbi Standard and alternative methods of stretcher carriage: performance, human factors, and cardiorespiratory responses
    J J Knapik
    US Army Research Laboratory, Human Research and Engineering Directorate, Aberdeen Proving Ground, MD 21010, USA
    Ergonomics 43:639-52. 2000
    ..Further developmental work should focus on the hip-shoulder and LCE systems...
  26. ncbi Comparison of the physical fitness of men and women entering the U.S. Army: 1978-1998
    Marilyn A Sharp
    U S Army Research Institute of Environmental Medicine, Natick, MA 01760 5007, USA
    Med Sci Sports Exerc 34:356-63. 2002
    ..To compare the physical fitness levels of recruits entering the U.S. Army in 1998 to those entering in 1978 and 1983...
  27. ncbi Injuries and injury prevention among senior military officers at the Army War College
    Joseph J Knapik
    Directorate of Epidemiology and Disease Surveillance, U S Army Center for Health Promotion and Preventive Medicine, Aberdeen Proving Ground, MD, USA
    Mil Med 167:593-9. 2002
    ....
  28. ncbi Seasonal variations in injury rates in U.S. Army ordnance training
    Sarah B Jones
    RTI International, Research Triangle Park, NC 27709 2194, USA
    Mil Med 173:362-8. 2008
    ..This study assessed the effects of seasons and temperature on injury rates during U.S. Army ordnance advanced individual training...
  29. ncbi Retention in service of recruits assigned to the army physical fitness test enhancement program in basic combat training
    Joseph J Knapik
    Directorate of Epidemiology and Disease Surveillance, US Army Center for Health Promotion and Preventive Medicine, Aberdeen Proving Ground, MD 21010, USA
    Mil Med 168:490-2. 2003
    ..Thus, the program may be a useful tool for limiting attrition...
  30. doi Evaluation of mouthguards for the prevention of orofacial injuries during United States Army basic military training
    Georgia G dela Cruz
    US Army Center for Health Promotion and Preventive Medicine, Aberdeen Proving Ground, MD 21010, USA
    Dent Traumatol 24:86-90. 2008
    ..Mouthguards are now required at all five Army basic training sites when trainees are performing any of the four training activities...
  31. ncbi Risk factors for injuries during military parachuting
    Joseph J Knapik
    U S Army Center for Health Promotion and Preventive Medicine, Aberdeen Proving Ground, MD 21010, USA
    Aviat Space Environ Med 74:768-74. 2003
    ..Parachuting is an activity performed by a variety of occupational groups including the military, firefighters (smoke jumpers), and rescue groups...
  32. ncbi Injury rates and injury risk factors among U.S. Army wheel vehicle mechanics
    Joseph J Knapik
    U S Army Center for Health Promotion and Preventive Medicine, 1570 Stark Road, Aberdeen Proving Ground, MD 21010, USA
    Mil Med 172:988-96. 2007
    ..Among the men, elevated injury risk was associated with higher body weight and higher body mass index. It may be possible to prevent many injuries by implementation of evidenced-based interventions currently available in the literature...
  33. ncbi Outcomes of Fort Jackson's Physical Training and Rehabilitation Program in army basic combat training: return to training, graduation, and 2-year retention
    Keith G Hauret
    Directorate of Epidemiology and Disease Surveillance, U S Army Center for Health Promotion and Preventive Medicine, Aberdeen Proving Ground, MD 21010 5403, USA
    Mil Med 169:562-7. 2004
    ..The 2-year retention in service for PTRP trainees who graduated from BCT was similar to that of non-PTRP trainees...
  34. ncbi Increasing the physical fitness of low-fit recruits before basic combat training: an evaluation of fitness, injuries, and training outcomes
    Joseph J Knapik
    U S Army Center for Health Promotion and Preventive Medicine, Aberdeen Proving Ground, MD 21010, USA
    Mil Med 171:45-54. 2006
    ..This program evaluation showed that low-fit recruits who preconditioned before BCT had reduced attrition and tended to have lower injury risk, compared with recruits of similar low fitness who did not precondition...
  35. ncbi The validity of self-reported physical fitness test scores
    Sarah B Jones
    U S Army Center for Health Promotion and Preventive Medicine, 5158 Blackhawk Road, Aberdeen Proving Ground, MD 21010 5403, USA
    Mil Med 172:115-20. 2007
    ..Despite this, the close correlations between the actual and self-reported scores suggest that self-reported values are adequate for most epidemiological military studies involving larger sample sizes...
  36. ncbi Soldier load carriage: historical, physiological, biomechanical, and medical aspects
    Joseph J Knapik
    Directorate of Epidemiology and Disease Surveillance, U S Army Center for Health Promotion and Preventive Medicine, Aberdeen Proving Ground, MD 21010, USA
    Mil Med 169:45-56. 2004
    ..Load carriage can be facilitated by lightening loads, improving load distribution, optimizing load-carriage equipment, and taking preventive action to reduce the incidence of injury...